diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 338a2b533..161cd1b50 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -2186,6 +2186,7 @@ Zotero.Browser = new function() {
 	
 	function deleteHiddenBrowser(myBrowser) {
 		myBrowser.stop();
+		myBrowser.destroy();
 		myBrowser.parentNode.removeChild(myBrowser);
 		myBrowser = null;
 		Zotero.debug("deleted hidden browser");